I don't think so at all. I used to think it was about doing drugs but based on this, it may just be about the relaxing feeling of childhood places that were enjoyed.
Strawberry Field was the name of a Salvation Army children's home close to John Lennon's childhood home in Woolton, a suburb of Liverpool.[8][9] Lennon and his friends Pete Shotton, Nigel Walley and Ivan Vaughan used to play in the wooded garden behind the home.[10][11] One of Lennon's childhood treats was the garden party held each summer in Calderstones Park, near the home, where a Salvation Army brass band played.[12] Lennon's aunt Mimi Smith recalled: "There was something about the place that always fascinated John. He could see it from his window … He used to hear the Salvation Army band [playing at the garden party], and he would pull me along, saying, 'Hurry up, Mimi – we're going to be late.'"[11]
https://en.wikipedia.org/wiki/Strawberry_Fields_Forever